just got this blackberry not too long ago. its sprint but i have t-mobile so i cant use it as a phone and it doesnt have wifi so i cant download any cool apps or a voip app or anything. what can i do with this?

i dont know what apps they have. i just want something to keep me busy. i did a search but im not sure if the apps im finding are for this specific blackberry. a lot of the apps are for the storm. anyone know any cool mods i can do? i already know how to add themes but i want some mods.